Audi A1 vs Audi S8 tfsi: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Audi A1
84%
MOT pass rate · 235,482 vehicles
Audi S8 tfsi
89%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Audi A1 (84%) and Audi S8 tfsi (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Audi A1 | Audi S8 tfsi |
|---|---|---|
| MOT pass rate | 84% | 89% ✓ |
| MOT failure rate | 16% | 11% ✓ |
| Faults & advisories per test | 1.5 | 0.9 ✓ |
| Dangerous-fault share | 5% | 0% ✓ |
| Average mileage | 67,791 mi | — |
| Sample size (vehicles) | 235,482 | 1 |
Most common faults
Audi A1
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
Audi S8 tfsi
- Nearside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Offside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- COVID-19 6 MONTH EXTENSION
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Exhaust carbon monoxide content after 2nd fast idle exceeds default limits CO levels too high. (8.2.1.2 (b))
Reliability FAQ
On MOT pass rate the Audi A1 (84%) and Audi S8 tfsi (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Audi A1 report Full Audi S8 tfsi report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.